Topic 14/15 Study Guide

Kelly kept track of the number of books she read during the school year. She plotted the information on a coordinate grid. If her pattern of reading continues, how many books will she have read at the end of 16 weeks?

• 8 books

• 10 books

• 12 books

• 14 books

Dirani made a square on this coordinate grid. Three of the vertices were located at the following points: (2,7), (2,3), and (6,7). What is the location of the fourth vertex?

• (4, 6)

• (8, 4)

• (9, 3)

• (6, 3)

This graph shows the change in population in Charlotte, North Carolina between 1850 and 2017. Use the graph below to answer questions 3 and 4. Between which years did the population of Charlotte reach 600,000?

• 1980 and 1990

• 1990 and 2000

• 2000 and 2010

• 2010 and 2017

In which time frame did the population of Charlotte grow the slowest?

• Between 1850 and 1880

• Between 1890 and 1920

• Between 1930 and 1960

• Between 1980 and 2010

Which expression has a value that is 6 times greater than 8 more than 20?

• 20 + 6 x 8

• 6 x 8 + 20 

• (20 + 8) x 6

• 8 x (20 + 6)

A botanist was studying the impact of pollution on plant growth. 

● Every two weeks, she recorded data in sets of ordered pairs. 

● The x-coordinate is the number of weeks at the time of recording. 

● The y-coordinate gives the height of the plant in inches. She recorded the following coordinates for a plant exposed to pollution: (2, 6), (4,11), (6,15), (8,18), (10,20) 

If the pattern continues, at which week should the botanist expect no change in plant height? 

•  Week 12

• Week 13

• Week 14

• Week 16

Jannah is buying three notebooks and a backpack. The backpack costs 4 times as much as one notebook. If the notebooks cost $3.15 each, what is the total cost for all of the items? 

• $12.05 

• $12.60

• $22.05

• $9.45

Saul made a parallelogram on this coordinate grid. Three of the vertices were located at the following points: (5,7), (11,7), and (11,3). 

What is the location of the fourth vertex? 

• (5, 3) 

• (5, 0) 

• (4, 3) 

• (0, 4)

The school cafeteria wants to eliminate food waste. They noticed that about 150 pounds of food were being wasted each week. They started an awareness campaign and the amount of food being wasted decreased. They graphed the amount of food wasted each week and noticed a pattern. 

If this pattern continues, in how many weeks can they expect to waste less than 135 pounds of food?

• Week 21

• Week 22

• Week 23

• Week 24

Ada has 20 cups of icing ready to decorate cakes. 

• She wants to decorate 12 small cakes. 

• She wants each cake to have the same amount of icing. 

How many cups of icing should Ava use to decorate each small cake?

• 2/5 cup

•  1 2/3 cups

• 2 2/3 cups

• 3/5 cup